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Finding the Fourth Proportional to 711,888.32, 982,396.64 and 389,592.56

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Solution

The fourth proportional to 711,888.32, 982,396.64 and 389,592.56 is: 537,632.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,888.32 : 982,396.64 = 389,592.56 : x
  2. Step 2: Convert to fraction form
    711,888.32/982,396.64 = 389,592.56/x
  3. Step 3: Cross multiply
    711,888.32x = 982,396.64 × 389,592.56
  4. Step 4: Simplify right side
    711,888.32x = 382,734,421,913.00
  5. Step 5: Solve for x
    x = 382,734,421,913.00/711,888.32
  6. Step 6: Final answer
    x = 537,632.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.